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KMID : 0372919980190060603
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Journal of Biomedical Engineering Research
1998 Volume.19 No. 6 p.603 ~ p.609
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Analysis of the Diffuse Axonal Injury of the Human Brain using Finite Element Model
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Kim Yeong-Eun
Nam Dae-Hun
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Abstract
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To anlyze the diffuse axonal injury of the human brain, 3-D finite element models of the adult, two and three years child were developed. Triangular type acceleration which had its maximum value 200g was applied to investigate the effects of acceleration direction and duration time. The pattern of high shear stress generated at the brain stem, pones and midbrain was similar to the pattern of DAI seen in the clinical observation, especially high maximum shear stress was detected in the brain stem of the six year old child model under flexional acceleration. As the duration of acceleration increased generated pressure and maximum shear stress also increased. For the children’s model relatively small pressure was generated regardless of the acceleration direction and continued much longer compared with adult’s model. From this analysis maximum shear stress was revealed more proper indicator to predict DAI compared to HIC in case of angular acceleration loading.
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KEYWORD
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DAI, Finite element analysis, Acceleration, Human brain
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